Sony A1E Series Service Manual page 43

FLOW
6. IR REMOTE COMMANDER ERROR
Resistor value
[BKA]
R254 : 0 [ohm]
R1259 : 47k [ohm]
XBR-55/65A1E
IR remote commander does not
respond
Center white LED blinks
OK
when pushing buttons of
remote commander at close
to IR sensor.
NG
OK
Check harness connection
between BKA board and
Smart Core
NG
OK
Change harness between
BKA board to Smart Core
harness
NG
OK
Change Smart Core
NG
NG
Check resistor value on BKA
board
OK
TROUBLE SHOOTING
Battery of remote commander
could be weak.
Change battery.
Harness connection
issue
BKA board to Smart Core harness
issue
Smart Core issue
Parts issue
Change BKA board
Main device issue
43